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Old 08-19-2014, 06:14 PM   #17
Scooby Specialist
Member#: 296667
Join Date: Oct 2011
Chapter/Region: NESIC
Location: Eastern Connecticut
2011 Forester 2.5X
Dark Grey Metallic


Originally Posted by bluesubie View Post
Correct for the Specifications section. The Maintenance and service section has the comment I am referring to.
See 11-15:

Not that the owner's manual is supposed to make sense or anything.


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Are you referring to this note on 11-15?

"NOTE: Engine oil viscosity (thickness) affects fuel economy. Oils of lower viscosity provide better fuel economy. However, in hot weather, oil of higher viscosity is required to properly lubricate the engine."

I ask you then.. What classifies as "hotter" weather? I can see if you're tracking your car you'd probably consider putting in 5W-40 but unless I see oil temps that go much higher than they are now I will not use anything other than 5W-30 until these UOAs tell me otherwise.

And yes, the manual specifically states that 5W-30 is the recommended viscosity but 5W-40 is allowed for replenishment.
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